package com.liuqi.service.impl;

import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.liuqi.entity.Menu;
import com.liuqi.mapper.MenuMapper;
import com.liuqi.service.MenuService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.stream.Collectors;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 */
@Service
public class MenuServiceImpl extends ServiceImpl<MenuMapper, Menu> implements MenuService {
        @Override
        public List<Menu> findMenus(String name) {
                QueryWrapper<Menu> queryWrapper = new QueryWrapper<>();
                if(StrUtil.isNotBlank(name)){
                        queryWrapper.like("name", name);
                }
                queryWrapper.orderByDesc("id");
                //查询所有数据
                /*List<Menu> list = menuService.list(queryWrapper);*/
                List<Menu> list = list(queryWrapper);
                //找出pid为null的一级菜单
                List<Menu> parentNodes = list.stream().filter(menu -> menu.getPid() == null).collect(Collectors.toList());
                //找出一级菜单的子菜单
                for (Menu menu : parentNodes) {
                        //筛选所有数据中pid=父级id的数据就是二级菜单
                        menu.setChildren(list.stream().filter(m->menu.getId().equals(m.getPid())).collect(Collectors.toList()));
                }
                return parentNodes;
        }
}
